These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Ensemble Darkhorse: Wolf, who also has the rare distinction of being introduced after the strip came "under new management", a common breeding ground for Scrappys.
Seasonal Rot: Many fans felt strip went downhill following the original creator's late-life conversion to hard-core fundamentalist Christianity. See above and below. After his death, the strip gained a new production team and turned back to its more wacky gag-a-day roots.
No other races have been depicted apart from generic white people (who happen to be cavemen), but one comic has B.C. answer the telephone to hear a voice on the other side say "Your raundry is leddy." The last panel is just B.C. giving an unimpressed look to the viewer.
Not to mention a strip that's been interpreted as a slam (pun actually intended) against Islam.
The only two female characters are called Fat Broad and Cute Chick.
A Pearl Harbor Day strip features a character reading from a pre-apocalyptic dictionary that the word "infamy" had been forgotten because of Toyota's sales.